UT1 Uni-Mould Tooling Resin

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This is a chemical product. Before storage or use you must download and read the accompanying safety and technical datasheets.

	Safety Datasheet (SDS) - EN	2 MB
	Safety Datasheet (SDS) - NL	463 KB
	Technical Datasheet (TDS)	280 KB

Specification

Product Data

Colour	Beige
Chemistry / Material	Polyester
Viscosity	1600	mPa.s
Flexibility	Hard / Rigid

Cured Mechanical Properties

Max Service Temp	90	°C
Hardness	70 (Hard)	Shore D
Tensile Strength	100	MPa
Flexural Strength	141.3	MPa
Elongation at Break	7.08	%

Pot Life and Cure Times

Pot Life (Typical)	35	mins
Initial Cure Time	24	Hrs
Full Cure Time	7	Days

General Properties

Gross Weight	5.25	kg

Shipping Information

Hazardous Shipment

This product is classed as dangerous goods for the purposes of transport. When ordering dangerous goods, a minimum order value of $100 (plus shipping) applies.

Shipping to mainland USA only. Dangerous goods may be subject to additional inspection, which can cause a short delay.

For a full information regarding the shipment of dangerous goods to all destinations, see our delivery information page.

Package Size

There are no package size restrictions or surcharges for this product.

Delivery Cost

To find the cost for delivery of this item to your address, add it to your cart then use the instant shipping calculator on the cart page.

PRODUCT VERSIONS

Pack Size

AVAILABILITY:2 in stock available for immediate shipping

0 more can built in 2-3 days

PRICE

$81.65

($61.82 /gal)

2 in stock available for immediate shipping

Trade discounts

0-4	5+
$81.65	$72.55

UT1 Uni-Mould Tooling Resin is part of the Uni-Mold™ universal mold making system and should be used in conjunction with Uni-Mould Tooling Gel Coat and Uni-Mould Coupling Coat to produce hard-wearing, polishable molds of any size with zero shrinkage suitable for use in just about any composites process.

For full details on the Uni-Mould system, read our Uni-Mould Introduction and Application Guide.

Note: This product requires MEKP catalyst, which is not available to buy on this site. Click here for more information.

Suggested Purchasing Quantities

Use the table below to help you purchase suitable quantities of the resins and glass for a given mold size.

	UT1 Uni-Mould Resin			Chopped Strand Mat
The table is NOT an exact guide to the ratios of the materials but is rounded up to the nearest purchasable pack size or weight of mat.
Mold Area	Tooling Gel	Coupling Coat	Tooling Resin	100g (2.9oz)	450g (13.3oz)
0.6sqm (6.5sq ft)	1kg (37oz)	1kg (37oz)	5kg (1.5gal)	2sqm (2.4 sq yd)	2kg (4.4lb)
3.5sqm (37.7sq ft)	5kg (1.5gal)	5kg (1.5gal)	25kg (7.4gal)	7sqm (8.4sq yd)	7kg (15.4lb)
13sqm (140sq ft)	10kg (3gal)	25kg (7.4gal)	100kg (29.6gal)	26sqm (31.1sq yd)	25kg (55lb)

Further Information

Application

The laminating technique for the UT1 Uni-Mold Tooling Resin is quite different from conventional polyester tooling resin or laminating resins and it is essential that you familiarise yourself with this technique and follow the guidelines carefully in order for the resin to cure properly and result in a successful mold.

UT1 Uni-Mould Tooling Resin is cured by its own exotherm and must reach a temperature of 50-60°C (122-140°F) during its cure in order to achieve its full properties. In order for this to happen your workshop environment needs to be between 18°C and 25°C (65-77°F) and you must lay down a minimum of 4 layers of 450gsm (13.3oz yd) or resin-rich (4:1) CSM onto the back of the mold in a single session.

Preparation

In order to ensure that all the reinforcement can be laid down in a single session it is important to prepare the resin and reinforcement in advance before starting to laminate.

Cut your 450gsm (13.3oz yd) CSM to the right shapes for your mold, allowing for a minimum of 4 layers of mat. Once you have cut the mat, weigh it to see how much CSM you will be using.

Next, weigh out 4 times the weight of the glass in resin (UT1 Uni-Mould Tooling Resin should be used at a typical 4:1 ratio or resin to glass) which means if you are using 5kgs (1.5gal) of CSM to reinforce your mold you should prepare 20kgs (5.9gal) of resin.

Begin Laminating

When you are ready, catalyse the resin using MEKP catalyst (not included) at 0.75 - 1.25% (depending on the ambient temperature) and mix thoroughly.

Working quickly, apply resin all over the mold and then add layers of glass one at a time, wetting with plenty of resin (4:1 by weight) until you have added all the layers of glass to the back of the mold. You should use the last of the prepared resin as you add the last layer of CSM.

As the laminate starts to cure the temperature will rise to 50-60°C (122-140°F) and the color of the laminate will change from a mid brown to a light brown color.

Allow the resin to cure fully for 24hrs.

Use with Prepregs

Although it is possible to use Uni-Mould molds with out-of-autoclave (oven cure) prepregs (such as XPREG® XC110) we no longer recommend Uni-Mould molds for this purpose.

Instead – for prepreg use – better results will be achieved using high temperature epoxy molds made using our EG160 / EMP160 tooling system or XPREG® XT135 Tooling Prepreg. These high temperature epoxy tooling systems allow the prepreg to be cured at the optimum 120°C (248°F) which reduces the cure time and improves the mechanical properties of the component. Additionally, epoxy tools have been found to result in a better surface finish with prepregs such as XPREG® XC110.

Compatibility Information - Dos and Don'ts

Although by no means an exhaustive list, the mold materials, pigments and additives listed below have all been tested and are known to work well with UT1.

Compatible Patterns

Uni-Mold Mold System
UC1 Uni-Mold Coupling Coat
Polypropylene and polyethylene sheet
Most Woods (eg. stiffening battens in mold laminate/edge)

Compatible Release Agents

Chemical Release Agents (such as Easy-Lease)
Mold Release Wax (such as Miracle Gloss #8 Wax)

Compatible Additives

No filling necessary.

Key Processing Information

Ease of Use: Suitable for professional and hobby use (follow SDS advice).
Odour: Tooling Resin has a strong styrene based odour.
Safety Precautions: Wear gloves and goggles and work in a well ventilated area. Always read the SDS before use.
Ambient Conditions: Can be used from 15 to 30°C (59 to 86°F) although pot-life and cure time will be affected significantly. Recommended working at an ambient of 20-25°C (68-77°F).
Degassing: Not necessary. Simply mix and use.
Mix Ratio: Add MEKP Catalyst at a ratio of 0.75 - 1.25% dependent on ambient temperature. Use digital scales.
Mixing: Mix thoroughly by hand for at around 2 minutes.
Application: Can be applied by brush and plastic finned roller
Pot-Life: >The pot life at 20°C (68°F) is 35 minutes. Be sure to use your resin before this time.
Exotherm (Over-Heating): Resin will heat-up whilst it cures. Mix in small batches and use expediently. Mixed resin in a pot will quickly overheat (exotherm) and can smoke/ignite. Never leave mixed resin unattended.
Maximum Service Temperature: When fully cured and post cured, the maximum Service Temperature of Uni-Mold molds is 90°C (194°F).
Cure Time/Demold: At 20°C (68°F) the demold time is 24hours.
Overcoating: Where thicker molds are desired, you can overcoat the tooling resin 1 Hr 30 Mins after the first layers have "whitened" and exothermed.
Shelf Life: Uni-Mould tooling Resin has a shelf-life of 4 months.

Can’t find the answer you’re looking for?Ask our technical team a question.

The reason we can’t ship MEKP outside of the UK is because it is highly oxidizing, and standard carrier services do not permit it to be transported.

However you can purchase MEKP from any suppliers of composite materials including fibreglass (GRP) shops, roofing suppliers, boat buildings, car bodyshops etc. There is nothing special about the MEKP we supply, you can ask at your local supplier for ‘Standard reactivity MEKP’; brands such as Andanox KP9, Akperox A30, Butanox M50 (Akzo Nobel) are all suitable and widely available.

It's always worth testing a small amount on a discrete area first to check that the gelcoat wont attack the vinyl. If you still have the vinyl left over, you could even apply your chosen release agent and do a test with some of the gel to make sure that it releases okay. Apart from that it should be fine, applying vinyl over a part is a well used technique when the finish of the part may not be compatible with the chosen tooling gel and the original needs to be protected.

There is really very little you need to consider in terms of storing Uni-Mould moulds in the long term. We've had moulds that we've used for many years, sometimes using them every day, other times using them every few months. The only likely condition that could do them any harm would be if they were stored in very damp conditions or out exposed to the weather and elements. Because you'll have an exposed glass fibre edge, over time, water could 'ingress' into the glass fibre and the moulds would deteriorate; this would take a long time however and would need require constant exposure to wet weather.

It's also worth pointing out that if you're using a semi-permanent release agent, like Easy Lease, you would need to give your moulds a fresh coat of release agent when you use them again if they've been in storage for anything more than a few weeks.

Yes, you will need MEKP Catalyst to cure any of our Uni-Mould resins, including the Tooling Gelcoat. You can order the MEKP from the product page and can also find the MEKP separately here: MEKP Catalyst

Really, any more than 4 layers at a time would be risking the mould overheating. If you wanted to go thicker, then you will need to wait for the first 4 layers to cure, then key the surface and apply another 4 layers (you need the 4 layer thickness to give you the heat to cure the resin)

Uni-Mould Tooling Resin, and most resins, are highly temperature sensitive and should be cured at around 20°C where possible. The lower the temperature, the longer the cure but below 10°C, the cure is likely to stall completely. As such we cannot recommend using it at sub zero temperatures as it will not cure.

Hi Sjoerd, firstly, I'll assume that you have a good reason why you want 15mm thick mould; this is much thicker than would ever normally be required and will increase a lot the weight and cost of the mould. Normally, if a large mould needs extra rigidity (stiffness) it is usually better to create a support structure (using something like plywood) which can be laminated onto the reverse of the mould.

If you really do want to create a 15mm thick Uni-Mould laminate then it would be possible to make it up in 3 sessions of 5mm per session. Whilst it might be just about possible to increase the thickness up to 7.5mm per session, the increased thickness would significantly increase the risk of the system exotherming and reaching excessively high temperatures, potentially causing distortion to the mould. Better to stick to 5mm per layup session and not start the next session until the previous session is back down to normal room temperature.

ASK YOUR OWN QUESTION